基于Vivado和Ego1的密码锁设计
目录
一． 引言 2
二． 实验环境 2
三． 设计原理 2
1.Verilog 基础 2
2.Vivado 软件设计平台 4
3.Ego1 硬件实验平台 4
四． 设计方案 7
1.密码锁端口预设 7
2.密码锁状态分类 9
3.密码锁开锁逻辑 10
4.密码锁修改密码设计 13
5.可视化设计 14
6.管脚约束 17
五． 实验测试与结果分析 19
1.密码锁开锁测试 19
2.修改密码测试 20
3.密码锁超时锁死测试 21
六． 设计总结 22
七． 致谢 22
“密码锁”系统设计报告
移动通信网络实验课程以软硬件结合的方式进行实践教学。完成 FPGA 基础实验后并要求自主设计一个完整的程序，并在硬件平台上实现逻辑功能。本次课程报告的设计以“密码锁”展开，在 Ego1 硬件平台上实现可操作的逻辑。具体将包括到基本的时钟及复位按钮，调节按钮及相应的 LED 灯来改变当前模式，一组
LED 流水灯倒计时设计，七段数码管分段显示及实时修改数字密码并显示当前锁的状态等。
本文转载自http://www.biyezuopin.vip/onews.asp?id=14927实验需要预先学习的知识包括Verilog HDL 语法学习，Vivado 软件使用学习，Ego1 板卡相关端口学习。
通过本次课程的学习，下面将对“密码锁”逻辑程序的具体设计流程展开说明。 具体包括实验环境，设计原理，设计方案，实验测试与结果分析，设计总结几个部分。
二． 实验环境
操 作 系 统 ：Window 10； 设计软件：Vivado 2017.4； 硬件平台：Ego1；
三． 设计原理
1.Verilog 基础
硬件描述语言(HDL)是一种用形式化方法来描述数字电路和设计数字逻辑系统的语言。它可以使数字逻辑电路设计者利用这种语言来描述自己的设计思想，然后利用电子设计自动化(EDA)工具进行仿真，再自动综合到门级电路， 再用 ASIC 或 FPGA 实现其功能。
`timescale 1ns / 1ps
module lock(
input sys_clk, //总时钟
input rst_n, //reset重置
//五个按钮：上下左右中
input up_button,
input down_button,
input left_button,
input right_button,
input middle_button,
input mode, //SW7开关控制模式
output wire ledlow, //SW7对应的LED灯
output wire [7:0] ledbit, //数码管显示位信息
output wire [6:0] ledshow, //前四位数码管每段信息
output wire [6:0] ledshow2, //后四位数码管每段信息
output reg [7:0] leddown //8个小LED灯：流水计时
);
wire [63:0] timer;
wire [63:0] led_timer;
wire [63:0] pwd_cng_timer;
wire [63:0] jmp1;
wire [63:0] jmp2;
wire [63:0] jmp3;
wire [63:0] jmp4;
wire [63:0] jmp5;
wire [63:0] jmp6;
wire [63:0] jmp7;
wire [63:0] jmp8;
wire [63:0] main_timer;
wire [63:0] left_timer;
wire [63:0] right_timer;
wire [63:0] up_timer;
wire [63:0] down_timer;
wire [63:0] middle_timer;
reg lock_status; //是否为锁住状态
wire load_status; //是否为修改密码状态
wire read_status; //是否为检验密码状态
reg succ_status; //是否成功解锁
reg [7:0] is_jmp; //当前选中位（实现闪烁）
reg [7:0] choose; //指针
clock_make U1(
.sys_clk(sys_clk),
.rst_n(rst_n),
.timer(timer),
.led_timer(led_timer),
.load_status(load_status),
.read_status(read_status),
.lock_status(lock_status),
.is_jmp(is_jmp),
.pwd_cng_timer(pwd_cng_timer),
.middle_button(middle_button),
.left_button(left_button),
.right_button(right_button),
.up_button(up_button),
.down_button(down_button),
.jmp1(jmp1),
.jmp2(jmp2),
.jmp3(jmp3),
.jmp4(jmp4),
.jmp5(jmp5),
.jmp6(jmp6),
.jmp7(jmp7),
.jmp8(jmp8),
.main_timer(main_timer),
.left_timer(left_timer),
.right_timer(right_timer),
.up_timer(up_timer),
.down_timer(down_timer),
.middle_timer(middle_timer)
);
reg [7:0] numbit; //数字显示位信息
reg [3:0] number1; //前四位数码管数字信息
reg [3:0] number2; //后四位数码管数字信息
//锁密码字段4位
reg [3:0] pwd1;
reg [3:0] pwd2;
reg [3:0] pwd3;
reg [3:0] pwd4;
reg [3:0] pwds; //当前输入密码
reg [3:0] number_1;
reg [3:0] number_2;
reg [3:0] number_3;
reg [3:0] number_4;
reg [3:0] number_5;
reg [3:0] number_6;
reg [3:0] number_7;
reg [3:0] number_8;
digital_put U2(
.sys_clk(sys_clk),
.rst_n(rst_n),
.timer(timer),
.numbit(numbit),
.number1(number1),
.number2(number2),
.ledbit(ledbit),
.ledshow(ledshow),
.ledshow2(ledshow2)
);
assign ledlow = mode;
assign read_status = ~mode;
assign load_status = mode;
initial
begin
numbit <= 8'b11111111;
is_jmp <= 8'b00000000;
number1 <= 4'd0;
number2 <= 4'd0;
number_1 <= 4'd0;
number_2 <= 4'd0;
number_3 <= 4'd0;
number_4 <= 4'd0;
number_5 <= 4'd0;
number_6 <= 4'd0;
number_7 <= 4'd0;
number_8 <= 4'd0;
pwd1 <= 4'd1;
pwd2 <= 4'd0;
pwd3 <= 4'd0;
pwd4 <= 4'd0;
pwds <= 4'd0;
lock_status <= 1'b0;
succ_status <= 1'b0;
choose <= 4'b0;
end
always@(posedge sys_clk or negedge rst_n)
begin
//初始化
if(~rst_n)
begin
leddown <= 8'b11111111;
lock_status = 1'b0;
end
//流水灯计时
else if(read_status == 1'b1)
begin
if(led_timer == 64'd199_999_999) //49_999_999
begin
leddown <= 8'b11111110;
end
else if(led_timer == 64'd399_999_999)//99_999_999
begin
leddown <= 8'b11111100;
end
else if(led_timer == 64'd599_999_999)//149_999_999
begin
leddown <= 8'b11111000;
end
else if(led_timer == 64'd799_999_999)//199_999_999
begin
leddown <= 8'b11110000;
end
else if(led_timer == 64'd999_999_999)//249_999_999
begin
leddown <= 8'b11100000;
end
else if(led_timer == 64'd1_199_999_999)//299_999_999
begin
leddown <= 8'b11000000;
end
else if(led_timer == 64'd1_399_999_999)//349_999_999
begin
leddown <= 8'b10000000;
end
else if(led_timer == 64'd1_599_999_999)//399_999_999
begin
leddown <= 8'b00000000;
end
else if(led_timer == 64'd1_799_999_999)//449_999_999
begin
leddown <= 8'b11111111;
lock_status = 1'b1; //超时锁住
end
end
//read_status=0 ,设置密码
else
begin
leddown <= 8'b10101010;
end
end
always@(posedge sys_clk)
begin
//成功解锁 -HCC
if(succ_status == 1'b1)
begin
number_5 <= 4'd14;
number_6 <= 4'd12;
number_7 <= 4'd13;
number_8 <= 4'd13;
end
else
begin
//未在规定时间内解锁 Fail
if(lock_status == 1'b1)
begin
number_5 <= 4'd15;
number_6 <= 4'd10;
number_7 <= 4'd1;
number_8 <= 4'd11;
end
else
//解锁中 CALL
begin
number_5 <= 4'd13;
number_6 <= 4'd10;
number_7 <= 4'd11;
number_8 <= 4'd11;
end
end
end
//左右键设置指针指向
always@(posedge sys_clk)
begin
if(choose == 8'd0)
begin
if(right_timer == 64'd9_999_999)
begin
choose = 8'd1;
end
end
else if(choose == 8'd1)
begin
if(left_timer == 64'd9_999_999)
begin
choose = 8'd0;
end
else if(right_timer == 64'd9_999_999)
begin
choose = 8'd2;
end
end
else if(choose == 8'd2)
begin
if(left_timer == 64'd9_999_999)
begin
choose = 8'd1;
end
else if(right_timer == 64'd9_999_999)
begin
choose = 8'd3;
end
end
else if(choose == 8'd3)
begin
if(left_timer == 64'd9_999_999)
begin
choose = 8'd2;
end
end
end
//上下键设置数值
always@(posedge sys_clk or negedge rst_n)
begin
if(~rst_n)
begin
number_1 = 4'd0;
number_2 = 4'd0;
number_3 = 4'd0;
number_4 = 4'd0;
end
else
begin
if(choose == 4'd0)
begin
if(up_timer == 64'd9_999_999)
begin
if(number_1 < 4'd9)
begin
number_1 = number_1 + 1'b1;
end
end
if(down_timer == 64'd9_999_999)
begin
if(number_1 > 4'd0)
begin
number_1 = number_1 - 1'b1;
end
end
end
if(choose == 4'd1)
begin
if(up_timer == 64'd9_999_999)
begin
if(number_2 < 4'd9)
begin
number_2 = number_2 + 1'b1;
end
end
if(down_timer == 64'd9_999_999)
begin
if(number_2 > 4'd0)
begin
number_2 = number_2 - 1'b1;
end
end
end
if(choose == 4'd2)
begin
if(up_timer == 64'd9_999_999)
begin
if(number_3 < 4'd9)
begin
number_3 = number_3 + 1'b1;
end
end
if(down_timer == 64'd9_999_999)
begin
if(number_3 > 4'd0)
begin
number_3 = number_3 - 1'b1;
end
end
end
if(choose == 4'd3)
begin
if(up_timer == 64'd9_999_999)
begin
if(number_4 < 4'd9)
begin
number_4 = number_4 + 1'b1;
end
end
if(down_timer == 64'd9_999_999)
begin
if(number_4 > 4'd0)
begin
number_4 = number_4 - 1'b1;
end
end
end
end
end
always@(posedge sys_clk or negedge rst_n)
begin
if(~rst_n)
//初始密码设置和初始默输入密码
begin
pwd1 <= 4'd2;
pwd2 <= 4'd0;
pwd3 <= 4'd2;
pwd4 <= 4'd0;
pwds <= 4'b0000;
succ_status <= 1'b0;
end
else
begin
if(pwd1 == number_1)
begin
pwds[3]=1'b1;
end
else
begin
pwds[3]=1'b0;
end
if(pwd2 == number_2)
begin
pwds[2]=1'b1;
end
else
begin
pwds[2]=1'b0;
end
if(pwd3 == number_3)
begin
pwds[1]=1'b1;
end
else
begin
pwds[1]=1'b0;
end
if(pwd4 == number_4)
begin
pwds[0]=1'b1;
end
else
begin
pwds[0]=1'b0;
end
//未解锁状态下
if(lock_status == 1'b0)
begin
//读取状态 密码正确解锁
if(read_status == 1'b1)
begin
if(middle_timer == 64'd9_999_999)
begin
if(pwds == 4'b1111)
begin
succ_status <= 1'b1;
end
else
begin
succ_status <= 1'b0;
end
end
end
//非读取状态
else
begin
if(load_status == 1'b1)
begin
//加载状态下 设置密码---------------------------------------------
if(middle_timer == 64'd9_999_999)
begin
pwd1 <= number_1;
pwd2 <= number_2;
pwd3 <= number_3;
pwd4 <= number_4;
succ_status <= 1'b0;
end
end
end
end
end
end
//设置闪烁灯位置
always@(posedge sys_clk)
begin
if(choose == 8'd0)
begin
is_jmp <= 8'b10000000;
end
else if(choose == 8'd1)
begin
is_jmp <= 8'b01000000;
end
else if(choose == 8'd2)
begin
is_jmp <= 8'b00100000;
end
else if(choose == 8'd3)
begin
is_jmp <= 8'b00010000;
end
end
//闪烁与选中设置
always@(posedge sys_clk or negedge rst_n)
begin
if(~rst_n)
begin
numbit <= 8'b11111111;
number1 <= 4'd0;
number2 <= 4'd0;
//number_1 <= 4'd1;
//number_2 <= 4'd2;
//number_3 <= 4'd3;
//number_4 <= 4'd4;
//number_5 <= 4'd5;
//number_6 <= 4'd6;
//number_7 <= 4'd7;
//number_8 <= 4'd8;
end
else if(timer <= 64'd249999)
begin
numbit = 8'b10001000;
if(is_jmp[7] == 1'b1)
begin
if(jmp1 <= 50000000)
begin
number1 = number_1;
end
else
begin
numbit[7] = 1'b0;
end
end
else
begin
number1 = number_1;
end
if(is_jmp[3] == 1'b1)
begin
if(jmp5 <= 50000000)
begin
number2 = number_5;
end
else
begin
numbit[3] = 1'b0;
end
end
else
begin
number2 = number_5;
end
end
else if(timer <= 64'd499999)
begin
numbit = 8'b01000100;
if(is_jmp[6] == 1'b1)
begin
if(jmp2 <= 50000000)
begin
number1 = number_2;
end
else
begin
numbit[6] = 1'b0;
end
end
else
begin
number1 = number_2;
end
if(is_jmp[2] == 1'b1)
begin
if(jmp6 <= 50000000)
begin
number2 = number_6;
end
else
begin
numbit[2] = 1'b0;
end
end
else
begin
number2 = number_6;
end
end
else if(timer <= 64'd749999)
begin
numbit = 8'b00100010;
if(is_jmp[5] == 1'b1)
begin
if(jmp3 <= 50000000)
begin
number1 = number_3;
end
else
begin
numbit[5] = 1'b0;
end
end
else
begin
number1 = number_3;
end
if(is_jmp[1] == 1'b1)
begin
if(jmp7 <= 50000000)
begin
number2 = number_7;
end
else
begin
numbit[1] = 1'b0;
end
end
else
begin
number2 = number_7;
end
end
else if(timer <= 64'd999999)
begin
numbit = 8'b00010001;
if(is_jmp[4] == 1'b1)
begin
if(jmp4 <= 50000000)
begin
number1 = number_4;
end
else
begin
numbit[4] = 1'b0;
end
end
else
begin
number1 = number_4;
end
if(is_jmp[0] == 1'b1)
begin
if(jmp8 <= 50000000)
begin
number2 = number_8;
end
else
begin
numbit[0] = 1'b0;
end
end
else
begin
number2 = number_8;
end
end
end
endmodule
